{
  "manageEntity": {
    "action": "Update",
    "entityId": "571909824",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieratdns56byfre3qunbcc4452cvggwtvmiu45ithmvwawi77mj3y3va\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1748301576},{\"type\":\"playlist\",\"playlist_id\":370788699},{\"type\":\"playlist\",\"playlist_id\":1263591576}]}}}",
    "nonce": "0xb98035d5ca8d2104d73e25e204398a51596c44aa114570b2efba2ab0720c1c18",
    "signature": "0xbe94ee2e5edfb9afc1738a2b158b3acdba28231fa51451549c2be76e56a970d437a07c6924de3232e2e36ce986751b16b42229bdc31fe468d03299b4486345631c",
    "signer": "0x4cf1Ab2ea0C2B41E1fe62E75979526ACCBc02611",
    "userId": "571909824"
  }
}